It’s 2 and 8 as the left end of the box is Q1 and the right end of the box is Q3. I’m a little rusty on box and whisper plots but this should be correct.

7 0

3 years ago

Numbers that put things in order are called cardinal numbers. <br> True False

rewona [7]

True

plz thank me, it motivates me to answer more of your questions :)

5 0

3 years ago

Read 2 more answers

the annual rate of inflation is given by the formula I = (p2/p1)^1/n - 1, where p1 is the initial price of an item and p2 is the

aleksklad [387]

Answer:

<h2>The value of $n$ is 31 years.</h2>

Step-by-step explanation:

The given equation is formed by different variables, where $n$ indicates the period of time in years where the rate of inflation is calculated.

In this case, we have a period from 1980 to 2011. The difference between these years would be the period of time used to find the inflation rate.

$2011-1980=31$

Therefore, the value of $n$ is 31 years.

5 0

3 years ago

The principal randomly selected six students to take an aptitude test. their scores were: 81.4 78.6 71.3 77.8 76.9 77.7 determin

Firdavs [7]

The confidence interval is $77.28\pm 2.23$ .

We first find the mean. Add together all of the data points and divide by 6, the number of data points; the mean is 77.28.

Next we find the standard deviation. Find the difference between each data point and the mean; square it; find the sum; divide by the number of data points; take the square root. The standard deviation is 3.32.

To find the margin of error, we calculate the z-score associated with this level of confidence. 100-90 = 10% = 0.1; 0.1/2 = 0.05; 1-0.05 = 0.95. Using a z-table (http://www.z-table.com) we see that this is between two scores, 1.64 and 1.65; we will use 1.645.

The margin of error is given by
z * (σ/√n) = 1.645*(3.32/√6) = 2.23.

Thus the confidence interval is 77.28 +/ 2.23.

3 0

3 years ago